한국철도학회:학술대회논문집 (Proceedings of the KSR Conference)
- 한국철도학회 2007년도 추계학술대회 논문집
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- Pages.82-89
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- 2007
고속철도 차음구조의 차음성능: 주름 및 압출재의 투과손실
Sound Insulation Performance of the Panel Structures in High Speed Train: Transmission Loss of the Corrugated and Extruded Panels
- 발행 : 2007.11.08
초록
Sound transmission characteristics are investigated on the corrugated steel and aluminium extruded panels used for railway vehicles. Sewell-Sharp-Cremer(SSC) model, equivalent orthotropic plate model and equivalent mass law are applied to predict the sound transmission loss. The predicted values of the sound transmission loss are compared with the measured values. The reliability and the limitation of the prediction models are investigated. For the corrugated panels and honeycomb panels, the coincidence and local resonance severely deteriorate the sound insulation performance around the corresponding frequency bands. The result of the study shows that the equivalent orthotropic plate model and the SSC model can be used as good prediction models, if the coincidence frequency or local resonance frequency is correctly applied.
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